Residents of Beverly Shores have long battled an invasion by garlic mustard, a weed that threatens to take over the forest floor if left unchecked. First year plants germinate from seed produced profusely by ancestors. Second year plants have tall stems capped with flowers that yield their own contributions to the seed supply before dying in June. Deer don't like garlic mustard, helping the plant compete more effectively with native forest floor plants that deer consume avidly. Garlic mustard has its own competitive advantages. It grows rapidly in early spring and in late fall, getting a jump on competition. Its first year leaves stay green over winter, allowing it to choke out most native spring flowers. In addition, garlic mustard produces allelopathic compounds that can inhibit seed germination by rival species.